Consider the following statement: ‘female, w+w flies have red eyes’. In this example: Group of answer choices 1) w+w is the genotype, and red eyes is the phenotype 2) female is the genotype, and red eyes is the phenotype 3) not enough information provided to determine genotype or phenotype 4) red eyes is the genotype, and w+w is the phenotype

What can explain the phenomenon where the same genotype might give rise to different phenotypes? A) pleiotropy B) penetrance and expressivity C) complete dominance D) codominance E) Incomplete dominance Explain each answer.

1) In some species of pea plant, pea colour is determined by one pair of alleles and pea shape by another - the genes are on different chromosomes. A plant grown from a round green pea was self-pollinated. The following numbers of offspring were obtained: 95 green round, 28 white round, 30 green wrinkled, 11 white wrinkled. a) What is the ratio of the phenotypes in the offspring? b) In each pair of alleles, colour and shape, which allele is dominant and which recessive? c) what was the genotype of the parent(s)? Use a diagram to show how this explains the phenotype ratio of the offspring.

In fruit flies, eye color is an X-linked trait.  Red eyes (XB) are dominant to maroon eyes (Xb). A male with red eyes mates with a female with maroon eyes. What will be the eye color of the flies in the F1 generation? A) Males: Maroon, Females: Red B) Males: Maroon, Females: Maroon C) Males: Red, Females: Maroon D) Males: Red, Females: Red E) Males: Maroon, Females: Red or Maroon

1) Plumage colour in mallard ducks is controlled by a number of alleles at one locus. MR is the allele for restricted mallard pattern, M for mallard and m for dusky mallard. The dominance hierarchy is MR>M>m. Determine the genetotypic and phenotypic ratios for the following crosses a) MRMR X MRM b) MRMR X MⓇm c) MⓇM x MⓇm d) MⓇm x Mm e) Mm x mm

12. A heterozygous black mouse is crossed with a white mouse. a) Which color is dominant? b) How did you know? c) Which letter will stand for the dominant color? d) Which letter will stand for the recessive color? e) What is the genotype of the white mouse? f) What is the genotype of the heterozygous black mouse? g) Complete the Punnett Square below for this cross. h) What percent of the offspring will be black?

You cross true breeding blue and red morning glories and get all blue offspring. a) Based on this information alone: i) How many loci are involved in the expression of this trait? How many alleles? What are the dominant and recessive interactions between the alleles at the locus/loci? ii)what are the possible genotypes of the parents and F1s? iii) Based on your hypothesized genotypes from ii, what do you expect the outcome of a cross between the F1's to be? (i.e. what phenotypes in what ratios?)     b) You then cross the F1 individuals and you obtain the following results Blue - 200 purple - 126 red - 24 i) Are these results statistically consistent with your hypothesis above? (prove it!) ii) If not, what is an alternative hypothesis that might explain these results? Are these results the result of one locus or 2? Test your new hypothesis using chi-squared test. Discuss the meaning of your results. (Note: If your hypothesis proves wrong, that is OK!!! But you have to be able to discuss…

In jabuticaba tree plant, Plinia cauliflora, the AA, Aa plants round fruit and aa oval fruit, the CC, Cc individuals show dark purple fruit and cc individuals are yellow; for the B locus B1B1 plants have all the fruit in their bark, B2B2 plants have fruit in the branches only and B1B2 plants have fruit in their bark and branches. A trihybrid jabuticaba having the genotype AaB1B2Cc is self-fertilized. Is there complete dominance at the B loci, yes or no? Please explain.

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7) Three years later, one of Rocky's and Ruby's sons, who is heterozygous for his curly fur, meets another dog that is also heterozygous for her curly fur. Create a Punnett square to show the possibilities that would result if they had puppies. (4) a) Fill in the Punnett square, then list the possible genotypes and phenotypes for the puppies. b) What are the chances of a puppy with curly fur? out of c) What are the chances of a puppy with straight fur? out of BLOMU CAGA (C 3LS gousur co BeGAGE (p) BROM ncrinoh (e) etone 2po BLOM